This module needs no configuration. Just make sure the netdata user
can run the loginctl command and get a session list without having to
specify a path.

This will work with any command that can output data in the exact
same format as loginctl list-sessions --no-legend. If you have some
other command you want to use that outputs data in this format, you can
specify it using the command key like so:

This module’s ability to track logins is dependent on what PAM services
are configured to register sessions with logind. In particular, for
most systems, it will only track TTY logins, local desktop logins,
and logins through remote shell connections.

The users chart counts usernames not UID’s. This is potentially
important in configurations where multiple users have the same UID.

The users chart counts any given user name up to once for each type
of login. So if the same user has a graphical and a console login on a
system, they will show up once in the graphical count, and once in the
console count.

Because the data collection process is rather expensive, this plugin
is currently disabled by default, and needs to be explicitly enabled in/etc/netdata/python.d.conf before it will run.